Plate-glass polisher



(Modlf) 2 sheetssheet 1.

' J. HASLEM.

` PLATE GLASS POLISHER. No. 349,430. Patented slenziLlle.,

(Model.) 2 sheets-sheet 2.A

J. HASLEM.

PLATE GLASS POLISHBR. No. 349,430. Patented Sept. 21, 1886.

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` ii 1/ E OP fifi W0 15 E F13 B UNITED STATES PATENOFFICE.

J HASLEM, OF JEFFERSONVILLE, INDIANA.

PLATE-GLASS POL-ISH ER.

SPECIFICATION forming part of Letters Patent No. 349,430, dated September 21, 1886.

Application filed March 4, 1884. Serial No. 1213,018. (Model.)

To all whont it may concern:

Be it known that l, J AMES HAsLEM, a citizen of the United States, residing at J etfersonville, in the county of Clark and State of lndiana, have invented a certain new and useful Improvement in American Plate-Glass Polishers; and I do hereby declarethat the following is afull, clear, and exact description of the construction and operation of the same, reference being had to the annexed specification.

My invention relates to that class of machines for polishing plate-glass which embody a frame or holder for the plate of glass, and mechanism for reciprocating the same in one direction, and reciprocating rubbers or polishers moving upon the glass in a transverse direction. Y

My invention consists in certain details of construction and operating mechanism in such machines, as hereinafter described, and particularly pointed out in the claims, whereby plate-glass may be smoothly, quickly, and safely polished.

In the accompanying drawings, in which like letters of reference indicate corresponding parts, Figure l is a perspective view of a machine embodying myimprovements; Fig. 2, a vertical longitudinal section; Fig. 3, a plan View of the mangle-motion device, showing the pinion on the inside and a guiding-groove at the bottom of the rack. Fig. 4 illustrates a detail of the slotted guide-frame for the shaft of the pinion in the mangle-motion device. Fig. 5 is a top plan view of the main bed-frame, illustrating the cross-beams and a series of rollers to support the holder or frame for the glass plate.

The letter A designates the main supportingframe, which may be constructed of any material of sufficient strength,and is of suitable size.

C indicates a pair of grooved guides placed parallel to each other upon opposite sides of the top of the frame A. These guides C receive and retain the plate-glass holder or support D in the proper plane. This plate holder or support is preferably constructed of rectangular form, and is supported at its lower side upon rollers E, journaled in suitable crossbeams in the upper portion of the frame A. The said glass frame or holder is adapted to receive a plate of glass to be polished, and isv provided at its under side with the mangleracks L L, of ellipticall outline, each having correspondinggrooves, N N. These mangleracks are engaged by pinions O O upon the upper ends of shafts Q Q. The teeth of the mangle-1acks are made-rounding or curved on their ends and in the bottom, so as to worktogether similar to corrugations, to prevent backlash or jerking in its operation. P P are guide-frames,constituting the upper bearing for the shafts Q Q. These shafts Q Q are supported at their lower ends in suitf able sockets in the main frame, and are provided With suitable gears engaged by rightand-left-hand worms or screws B upon a horizontal shaft, U. This shaft U is provided. at one end with a spur-gear, T, engaged by a similar gear, S, upon the main drivingshaft B. The revolution of the shaft B, through the gear T, worm R, and shaft Q, causes the pinions O to revolve, which transmit their motion to the manglelracks, giving a steady and reliable reciprocating movement to the plate-glass holder or frame. In the operation of this mechanismthe shafts Q are carried from side to s ide by the engagement of the pinions with the teeth at either end of the mangle-rack, against which the pinion is held by the grooveN, and thus they are made to engage first 011e side of ,the rack and then the other to produce the desired movements.

The letters G G designate the beams extending longitudinally of the frame, and in which the rubbers or polishers J are mounted. These beams are mounted upon the upper ends of vertical shafts K K, which are provided with eccentric cranks H, upon the Wrist-pins of which the beams are journaled. The shafts K K and KK are suitably journaled at the ends of the frame, and are secured at their up per ends by means of bearing-blocks I and I. The said shafts are provided with ruiter-gears X and X,which are engaged by similar gears, W, upon horizontal shafts W', journaled in the frame and extending longitudinally thereof. The shafts YV are revolved by the main driving-shaft B,and for this purpose the said shafts W are provided with spur-gears X', mounted upon the main driving-shaft, which are engaged by the spur-gear B on said driving-shaft.

The rubber-beams G are mounted upon the cranks H, so that they will bereciprocated simultaneously in opposite directions, which insures steadiness in the plate of glass.

The rubbers or polishers J are made of suitable size, and have their spindles journaled loosely and removably in suitable fasteningplates, p, Which themselves are removably and adjustably secured to the beams G. The faces of these rubbers or polishers are covered with felt, in order to hold the polishing material thereon. Any number of the polishers may be provided.

Motion may beimparted to the driving-shaft B by any suitable driving means or power.

What I claim as my invention, and desire to secure by Letters Patent, is

l. In a plate-glass-polishing machine, the combination of beams G G, each carryingaseries of looselyjournaled rubbers or polishers,

J, on each side thereof, crankshafts upon which said beams are journaled, and means for rotating said crank-shafts, the cranks upon which one beam is mounted extending in one direction, and the cranks on which the other beam is mounted being extended in the opposite direction, whereby said beams have a curvilinear reciprocating movement in oppo` site directions, substantially as set forth.

2.- In a plate-glass-polishing machine, the combination of beams G G, each carrying a series of loosely-journaled rubbers or polishers, J, on each side thereof, crank -shafts upon which said beams are journaled, the cranks upon Which one beam is journaled extending in one direction, and the cranks upon which the other beam is `journaled being extended in the opposite direction, whereby said beams have a curvilinear reciprocating movement in opposite directions, means for rotating said orankshafts, a frame or support for the glass plate, and means for reciprocating said frame or support, substantially as set forth.

JAMES HASLEM. 

